Can't Run a single test when using Zeus Parallel Spec along with Rspec. Focus:true doesn't work

Question

Rspec provides the handy ability to place focus: true by a test to make it run in isolation. And running $bundle exec rspec spec works to make this functionality true

However, usage of parallel specs alone $rake parallel:spec

or with Zeus : $zeus rake parallel:spec

does not work at all and results in the following

ignoring {:focus => true}

Why? I do not want it to be ignored!

Is there no way to run a single test or even a single file while using parallel specs? Trying to get it set up and debug errors that have to do with parallel processing, but I don't want to have to run the entire test suite to test a fix.

Specifying the file location afterwards such as $zeus rake parallel:spec spec/features/testing_questionnaire_submission_spec.rb

also fails to work.

Answer 1

This is a good question, and I have the same issue with parallel_tests in my configuration. As parallel_tests breaks the files into separate threads, it will not be of any benefit to run a single file multi-thread anyway.

You can see this when you run:

parallel_rspec spec/models/some_test.rb

It will say 1 processes for 1 specs, ~ 1 specs per process.

Thus, if you want to run a single spec in some_test.rb, use :focus for that it or specify block, and then run,

rspec spec/models/some_test.rb
or
parallel_rspec spec/models/some_test.rb

it doesn't matter. If you want to run a single spec file, it's the same command just no :focus.

The issue that needs to be fixed is when parallel_rspec is run and there is a :focus somewhere in the tests, it should just run that one spec. Instead, it seems to run every spec in every thread except for the thread that includes the :focus, where it only runs that one test in that thread.

And you can see here, I don't think that this issue is going to get fixed: https://github.com/grosser/parallel_tests/issues/114